What Should Be in a Prenup in Massachusetts? 2026 Complete Checklist

A valid Massachusetts prenuptial agreement must include full financial disclosure, fair and reasonable terms, proper notarization, and recording with the registry of deeds within 90 days of the wedding under Mass. Gen. Laws ch. 209 §§ 25-26. Massachusetts courts apply the DeMatteo v. DeMatteo two-look test, evaluating fairness both when you sign and when you divorce, meaning your prenup must remain conscionable throughout your marriage to be enforced.

Key Facts: Massachusetts Prenuptial Agreements

What to Include in a Prenup in Massachusetts: Essential Clauses

Massachusetts prenuptial agreements should address 15 or more distinct provisions to pass judicial scrutiny under the DeMatteo two-look test established in 2002. The agreement must be fair and reasonable at execution and remain conscionable at enforcement, meaning thorough drafting now prevents invalidation later. Courts will examine whether each party had adequate time, legal counsel, and complete financial information before signing.

Property Classification Provisions

Massachusetts uniquely allows courts to divide all property in divorce, regardless of when or how it was acquired, making prenuptial property classification essential for asset protection. Under Mass. Gen. Laws ch. 208 § 34, judges can reach premarital assets, inheritances, and gifts unless a valid prenup specifies otherwise. Your agreement should explicitly designate which assets remain separate property, which become marital property, and how appreciation on separate assets will be treated during marriage.

Property provisions to include:

• Real estate owned before marriage (address, approximate value, separate/marital designation)
• Bank accounts and investment portfolios with account numbers or identifiers
• Retirement accounts including 401(k)s, IRAs, and pensions
• Business ownership interests with current valuations
• Future inheritance expectations and treatment
• Appreciation on separate property during marriage
• Gift treatment between spouses and from third parties

Debt Allocation Provisions

Massachusetts courts can assign responsibility for debt acquired before or during marriage to either spouse in divorce proceedings, making prenuptial debt allocation critical for financial protection. Your agreement should specify which debts remain the sole obligation of the incurring spouse, including student loans averaging $32,000 in Massachusetts according to 2025 data, credit card balances, and business debts. Clear debt provisions prevent one spouse from becoming liable for the other spouse premarital financial obligations.

Debt provisions to address:

• Student loan balances with lender names and approximate amounts
• Credit card debt as of the wedding date
• Mortgage obligations on premarital real estate
• Business debts and personal guarantees
• Future debt acquisition responsibilities during marriage
• Joint debt treatment and liability allocation

Alimony and Spousal Support Terms

Massachusetts prenups can waive, limit, or define spousal support terms, but courts retain authority to override provisions that would leave one spouse unable to support themselves under the DeMatteo conscionability standard. Massachusetts alimony reform under Mass. Gen. Laws ch. 208 § 49 established durational limits based on marriage length, with marriages under 5 years capping alimony at 50% of the marriage duration. Your prenup can specify whether alimony will be paid, set amounts or formulas, and establish conditions or durations.

Alimony provisions commonly included:

• Complete waiver of alimony rights (enforceable if fair)
• Predetermined monthly amounts or percentage formulas
• Duration limits tied to marriage length
• Conditions for modification (job loss, disability, retirement)
• Cost-of-living adjustments or fixed amounts
• Termination triggers (remarriage, cohabitation, employment milestones)

Financial Disclosure Schedule

Massachusetts requires full and fair financial disclosure for prenuptial agreement validity, and failure to disclose significant assets or debts is among the most common reasons courts invalidate agreements at the first look. Each party must provide comprehensive information about assets, debts, income sources, and business interests before signing. General approximations of net worth may be sufficient under Massachusetts case law, but significant gaps that would have altered the decision to sign can void the agreement.

Your financial disclosure should include:

• Complete list of real property with addresses and estimated values
• All bank account balances (checking, savings, money market)
• Investment account statements (brokerage, retirement, education)
• Business ownership interests with valuations or estimates
• Current income from all sources with documentation
• Outstanding debts with creditor names and balances
• Expected inheritances or gifts (Vaughan affidavit if applicable)

Rights Waiver Provisions

Massachusetts courts require explicit waiver language demonstrating that each party knowingly gave up marital rights, as waiver underscores that both parties exercised meaningful choice when agreeing to modified terms. Without clear waiver provisions, courts may find the agreement ambiguous or question whether both parties understood what they were relinquishing. Standard waiver provisions address property division rights, elective share rights, and estate claims.

Essential waiver language should cover:

• Right to equitable distribution under Mass. Gen. Laws ch. 208 § 34
• Elective share against the other spouse estate under Mass. Gen. Laws ch. 191 § 15
• Right to serve as administrator of the other spouse estate
• Right to claim as surviving spouse in intestate succession
• Homestead rights in the marital residence

What Cannot Be Included in a Massachusetts Prenup

Massachusetts prenuptial agreements cannot include provisions that violate public policy, attempt to regulate child-related matters, or incentivize divorce, and courts will sever or void such clauses regardless of mutual consent. Understanding prohibited terms prevents drafting an agreement that fails judicial review. Massachusetts courts maintain exclusive authority over children and reject provisions that encourage marital dissolution.

Child Support and Custody Restrictions

Massachusetts courts retain full authority over child-related matters regardless of prenuptial terms, and any clause attempting to limit, waive, or predetermine child support is void and unenforceable. The court determines child support using Massachusetts Child Support Guidelines, which calculate obligations based on both parents incomes, number of children, and custody arrangements. Parents cannot contract away children rights to financial support, and courts will ignore such provisions entirely.

Prohibited child-related provisions:

• Predetermined child support amounts or waivers
• Custody or visitation arrangements
• Decision-making authority allocation for children
• Educational expense limitations for children
• Medical expense caps or allocations for children

Lifestyle and Penalty Clauses

Massachusetts prenups cannot contain lifestyle clauses where one spouse loses rights based on personal conduct such as weight gain, appearance changes, or household duties, as courts view such provisions as contrary to public policy. Infidelity clauses that impose financial penalties for adultery face scrutiny and may be deemed unenforceable depending on their scope and impact. Courts distinguish between reasonable provisions addressing economic consequences of conduct versus punitive measures designed to control behavior.

Generally unenforceable provisions:

• Weight gain or physical appearance penalties
• Household chore requirements with financial consequences
• Religious practice mandates
• Social relationship restrictions
• Punitive infidelity clauses that strip substantially all marital interests

Massachusetts Recording Requirements: The 90-Day Deadline

Massachusetts law requires prenuptial agreements to be recorded with the registry of deeds within 90 days after the marriage ceremony, or the agreement becomes void as to third parties under Mass. Gen. Laws ch. 209 § 26. This recording requirement is unique among states and applies specifically to property covered by the agreement. Failure to record does not void the agreement between the spouses themselves, but it eliminates enforceability against creditors, purchasers, and other third parties.

Recording requirements:

• File with the registry of deeds in the county where the husband resides
• If the husband does not reside in Massachusetts, file where the wife resides
• Include a schedule of all property affected by the agreement
• File in every county where real estate covered by the agreement is located
• Complete recording within 90 days of the wedding date

The DeMatteo Two-Look Test: How Massachusetts Courts Evaluate Prenups

Massachusetts courts apply the two-look test from DeMatteo v. DeMatteo, 436 Mass. 18 (2002), requiring prenuptial agreements to be fair and reasonable at execution and conscionable at enforcement, with separate analysis at each stage. This framework builds on the earlier Osborne v. Osborne, 384 Mass. 591 (1981) decision and remains binding precedent for Massachusetts Probate and Family Courts. Unlike the 28 states that adopted the Uniform Premarital Agreement Act, Massachusetts maintains this more comprehensive, fact-based approach.

First Look: Validity at Execution

The first look examines whether the prenup was valid when signed, focusing on procedural fairness and full disclosure rather than substantive terms. Courts consider whether each party had independent legal counsel, adequate time to review the agreement, understanding of the terms and their effects, and full knowledge of the other party assets and debts. Massachusetts does not require attorney representation for validity, but agreements where one party lacked counsel face heightened scrutiny.

First look factors include:

• Full and fair financial disclosure by both parties
• Voluntary execution without duress, threats, or coercion
• Reasonable time to review before signing (3-6 months recommended)
• Understanding of rights being waived
• Independent legal counsel (strongly recommended though not required)
• Proper execution with notarization

Second Look: Conscionability at Enforcement

The second look occurs at divorce, when courts determine whether enforcement would be conscionable given circumstances that developed during the marriage. An agreement that was fair at signing can become unenforceable if changed circumstances would leave the contesting spouse without sufficient property, maintenance, or appropriate employment to support themselves. However, courts will not invalidate an otherwise valid agreement merely because it produces an outcome different from what a judge would order under Mass. Gen. Laws ch. 208 § 34.

Second look considerations:

• Changes in financial circumstances during marriage
• Health conditions that developed
• Career sacrifices made for the marriage
• Whether enforcement would leave one spouse unable to be self-supporting
• Length of marriage and contributions during marriage
• Birth of children and related impact on earning capacity

Prenup Costs in Massachusetts: 2026 Price Guide

Massachusetts prenuptial agreement costs range from $1,500 to $10,000 or more in 2026, depending on asset complexity, attorney hourly rates, and whether both spouses hire independent counsel as recommended by courts applying DeMatteo standards. Boston-area family law attorneys charge $250 to $500 per hour, while attorneys in Springfield, Worcester, and other cities typically charge $200 to $350 per hour. Flat-fee arrangements for simple prenups range from $1,500 to $2,500 per attorney.

Optional Provisions to Consider

Massachusetts prenuptial agreements can include numerous optional provisions beyond core property and support terms, allowing couples to customize their agreement based on their specific circumstances, values, and concerns. These provisions should be drafted carefully to ensure enforceability and alignment with Massachusetts case law standards.

Pet Custody Provisions

Massachusetts courts treat pets as personal property in divorce proceedings, not as family members entitled to custody determinations, making prenuptial pet provisions valuable for animal owners. Your prenup can specify who retains ownership if the marriage ends, establish visitation or shared responsibility arrangements, and allocate financial responsibility for veterinary care, food, and other expenses. Courts generally honor such provisions when properly drafted.

Sunset Clauses

Sunset clauses establish an expiration date after which the prenup or specific provisions become invalid, typically set at 10, 15, 20, or 30 years of marriage. These clauses acknowledge that long marriages may warrant different treatment than short ones and can address concerns about one spouse giving up too much in a decades-long union. However, Massachusetts courts applying the second look may scrutinize sunset clauses that create unfair outcomes, and couples should consider whether a postnuptial agreement might be preferable to automatic expiration.

Business Protection Provisions

Entrepreneurs and business owners should include detailed provisions protecting business interests from division in divorce, including valuation methods, buy-out procedures, and restrictions on the non-owner spouse claims. Massachusetts courts can divide business interests as marital property absent a prenup, potentially forcing business sales or complex valuations. Your agreement should specify whether business appreciation during marriage remains separate property and how income from the business will be treated.

Estate Planning Integration

Coordinating prenuptial terms with estate planning documents ensures consistency and prevents conflicts between wills, trusts, and the prenup. Massachusetts prenups commonly address waiver of elective share rights under Mass. Gen. Laws ch. 191 § 15, which otherwise allows surviving spouses to claim a portion of the deceased spouse estate regardless of will terms. Include provisions specifying inheritance rights, beneficiary designations, and trust treatment.

Timeline: When to Start Your Massachusetts Prenup

Massachusetts couples should begin the prenup process 3 to 6 months before the wedding date to ensure adequate time for negotiation, attorney review, and voluntary execution without pressure from the approaching ceremony. Courts examining prenups under the first look consider whether both parties had sufficient time to understand terms and seek counsel. Last-minute agreements signed days before the wedding face heightened scrutiny for potential duress.

Recommended timeline:

• 6 months before: Begin discussions about prenup goals and concerns
• 5 months before: Compile financial disclosure documents
• 4 months before: Each party retains independent counsel
• 3 months before: Initial drafts exchanged and negotiations begin
• 2 months before: Final negotiations and revisions
• 1 month before: Final review and signing with notarization
• Within 90 days after wedding: Record with registry of deeds

Frequently Asked Questions

Can a Massachusetts prenup waive alimony completely?

Massachusetts prenups can waive alimony entirely if both parties knowingly agree, the waiver is fair and reasonable at signing, and enforcement would not leave one spouse unable to support themselves under the DeMatteo conscionability standard. Courts upheld a complete alimony waiver in DeMatteo v. DeMatteo even after a 10-year marriage with two children, leaving the wife with less than 1/200 of marital assets. However, waivers that would leave a spouse destitute may be unenforceable.

Does Massachusetts require both spouses to have attorneys for a valid prenup?

Massachusetts does not legally require attorney representation for a valid prenuptial agreement under Mass. Gen. Laws ch. 209 § 25, but courts applying DeMatteo give significant weight to whether both parties had independent counsel. Agreements where one party lacked legal representation face heightened scrutiny, and courts are far more likely to invalidate such prenups. Budgeting $1,500 to $4,000 per attorney substantially increases enforceability.

What happens if we do not record our prenup within 90 days?

Failing to record your Massachusetts prenup with the registry of deeds within 90 days of marriage under Mass. Gen. Laws ch. 209 § 26 renders the agreement void as to third parties including creditors and property purchasers, though it remains enforceable between the spouses themselves. This means a creditor could potentially reach property that the prenup designated as one spouse separate asset. Recording protects both parties interests against outside claims.

Can a prenup protect my business in a Massachusetts divorce?

Massachusetts prenups can effectively protect business interests from division in divorce by designating the business as separate property, specifying valuation methods, and establishing that appreciation during marriage remains separate. Without a prenup, Massachusetts courts can divide all property including premarital businesses under Mass. Gen. Laws ch. 208 § 34, potentially forcing sales or complex valuations. Include provisions addressing both current value and future growth.

How detailed must financial disclosure be in a Massachusetts prenup?

Massachusetts requires full and fair financial disclosure but accepts general approximations of net worth rather than exact figures, according to case law interpreting the DeMatteo standards. However, significant gaps that would have altered the decision to sign can invalidate the agreement at the first look. Best practice includes listing all real estate, bank accounts, investments, retirement accounts, business interests, debts, and income sources with identifying information and approximate values.

Can we include pet custody in our Massachusetts prenup?

Massachusetts prenups can include enforceable pet custody provisions because courts treat pets as personal property rather than family members entitled to custody determinations under current state law. Your agreement can specify who retains ownership if the marriage ends, establish shared responsibility or visitation arrangements, and allocate ongoing expenses. Courts generally honor such provisions when the prenup otherwise meets validity requirements.

What makes a Massachusetts prenup unenforceable?

Massachusetts courts invalidate prenups that fail the two-look test, finding agreements unenforceable when financial disclosure was inadequate, one party signed under duress, terms were unfair at execution, or enforcement would leave one spouse unable to support themselves. Other grounds for invalidation include lack of voluntary consent, failure to understand waived rights, provisions violating public policy, and terms stripping one spouse of substantially all marital interests. Courts retain discretion under both the first and second look analyses.

How long does a Massachusetts prenup last?

Massachusetts prenups remain valid indefinitely unless the agreement includes a sunset clause specifying an expiration date or conditions for termination, or unless the parties later execute a postnuptial agreement superseding the original terms. Common sunset clause timeframes range from 10 to 30 years of marriage. Courts applying the second look may scrutinize long-term prenups more carefully if circumstances changed dramatically during the marriage.

Can I modify my prenup after marriage in Massachusetts?

Massachusetts couples can modify prenuptial agreements after marriage through a postnuptial agreement, which must meet similar validity requirements including fair and reasonable terms, full financial disclosure, and voluntary execution. Postnuptial agreements allow couples to update terms based on changed circumstances, birth of children, career changes, or approaching expiration of sunset clauses. Both parties should have independent counsel review modifications.

What is the difference between Massachusetts prenup law and UPAA states?

Massachusetts has not adopted the Uniform Premarital Agreement Act (UPAA) used by 28 states, instead relying on case law including DeMatteo v. DeMatteo to govern prenuptial agreements with a more comprehensive, fact-based approach. UPAA states generally enforce prenups more automatically, while Massachusetts courts conduct both first-look and second-look analyses examining fairness at signing and conscionability at enforcement. This framework gives Massachusetts couples greater ability to challenge agreements but also creates more uncertainty about enforceability.

Sources

• Massachusetts General Laws Chapter 209
• Mass.gov Probate and Family Court Filing Fees
• Lynch & Owens: Massachusetts Prenuptial Agreement Law
• HelloPrenup: Massachusetts Prenuptial Agreements
• Mass.gov Pet Custody Information
• Divorce.law: Massachusetts Prenup Cost Guide